At what phase the DNA content of a cell is doubled?
Correct answer: B. Interphase
- A. Prophase
- B. Interphase
- C. Anaphase
- D. Telophase
Explanation
The DNA content of the cell doubles during S-phase that probably occurs during interphase of cell cycle. Following the G1 is the S-phase (synthesis phase) during which the DNA is synthesized and (chromosome are replicated) which initiates G2 phase (pre-mitotic phase), thus preparing the cell for division e.g., energy storage for chromosome movements, mitosis specific proteins, RNA and microtubule subunits (for spindle fibers) synthesize. Cells then proceed to next phase which is the period of division).
Last updated
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1000-2000 Okazaki fragment:
200 nucleotide + 8 histones:
2n= 16 in a primary spermatocyte, which is in the metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocytes?
A 10 nucleotide sequence i.e., RNA primer is constructed by:
A cell contains 8 chromosomes in its diploid state.When this cell undergoes meiosis, its daughter cells would contain: